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With 2 µm pumping, a 4 µm InAsSb/GaSb double heterostructure laser operated at 86.5 K yielded 11% slope power efficiency and 16 mW CW power. Pulsed operation up to 211 K was observed. The threshold and efficiency were studied as functions of temperature and pump wavelength.
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Le et al. (1994) studied this question.
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